Sigma 30mm F1.4 DC HSM Art Lens For Sigma DSLR Cameras :
The Sigma lens is a prime lens designed for Sigma APS-C format cameras. Its 35mm focal length
equivalent is 45mm which places it in the category of standard focal length lenses. With its
particularly fast maximum aperture of f/1.4, the lens will perform very well in low light
situations and provides shallow depth of field focus. With updated optical configurations (9
elements in 8 groups), as well as rounded aperture blades, the lens delivers sharp detail and nice
background bokeh. Its minimum focus distance is 11.8" (30 cm).
A Hyper Sonic Autofocus Motor (HSM) offers fast, smooth and quiet autofocus.
The lens optimized light distribution helps to minimize field curvature preventing a loss of image
quality at the edges of photographs and its double-sided aspherical lens element minimizes
spherical distortion. A rear focusing system combined with a newly developed autofocus algorithm
and Hyper Sonic Motor provide smooth and accurate autofocus. Fulltime manual focus is also
supported. As part of Sigma's "Art" line of lenses it is compatible with Sigma's USB Dock, which
enables firmware updates and focusing adjustments.
The lens is constructed with Thermally Stable Composite Material (TSC) which performs well in
extreme temperatures, reducing the expansion and contraction of the internal lens barrel.
Sigma 30mm F1.4 DC HSM Art Lens For Sigma DSLR Cameras is available at Microglobe at discounted
price. Microglobe is largest online sport optics store of the UK.